Ventilator



March 14, 1933. A. D. MElsl-:LBAcll VENTILATOR Filed Ju ly '7, 1930 2Sheets-Sheet l March 14, 1933.

A. D. MElsELBAcl-l v 1,901,114

VENTILATOR Filed July 7, 1930 2 Sheets-Sheet 2 Patented Mar. l14, 19,33

UNITED STATES PATENT' OFFICE Application med July 7, 1980. Serial No.465,861.

This invention relates to improvements in ventilators of the screen typeand especially to ilat ventilator panels or members adapted to bearranged to obstruct a window opening or the like, and permit the passae of air, but prevent or hinder the passage o dust, water or insects.

An important feature of the invention relates to the construction of thebody of the ventilator which is of relatively considerable thickness andconsists of air passages of relatively small area separated byrelatively thin walls.

The body of the ventilator may be aptly described as of a very tinehoney-comb construction/ff` y Other features of importance relate to simle means for adjust-ing the dimensions of the screen to fit variousspaces, means for mounting the screen in relation to a window so that itcan be inclined at various angles, and means for constructing the bodyof the screen.

The invention will be more readily understood by reference to theaccompanying drawings forming part of this specification and in whichFig. 1 is a fragmentary elevational view of a window equipped with aventilator embodying the invention in one form;

Fig. 2 is a fragmentary vertical sectional view on the line 2 2 of Fig.1;

Fig. 3 is a view similar to Fig. 2 but showin the ventilator in adifferent position;

ig. 4 is a sectional view similar to Fig. 2 but showing the ventilatorapplied in a different manner; v

Fig; 5 is a fragmentary horizontal sectional view on the line 5 5 ofFig. 4;

Fig. 6 is a fragmentary vertical section on the line 6 6 of Fig. 3;

Fig. 7 is a plan elevational view of the outer side of one end of theventilator;

Fig. 8 is a fragmentary horizontal sectional View of the screen propertaken on the line 8 8 of Fig. 6;

Fig. 9 is a fragmentary vertical sectional view on the line 9 9 of Fig.8;

Fig. 10 is an enlarged fragmentary side elevation of two of the stripsof which the ventilator proper is made, indicating the manner in whichthey are associated in buildin the ventilator; and

ig. 11 is a fragmentary perspective view of one end of one of the strlpsof which the ventilator proper is constructed.

In said drawings 20 indicates an ordinary window frame having side parts21 and a sill 22, and in which a window sash 23 can slide up and down.

In Fig. 2 the sash 23 is shown moved up from the sill to provide anopening 24 below the sash.

The ventilator shown in the drawings, and which is adapted to obstructthe opening 24, consists of a foraminous body 25 which may be dividedinto a number of parts, as shown in Fig. 1, the foraminous body mountedin a rigid frame 26. The frame 26 consists of upper and lower bars 27and 28, respectively, 10 and end bars 29. In the form shown in Fig.

1, there is also a center bar 30. The upper and lower bars, as shown inFig. 3, are provided with centrally located grooves 31 on their inneredges and the end bars are likewise provided with grooves 32 on theirinner edges. Similarly the center bar 30 is provided with grooves 33 onits two sides. These grooves are for the purpose of receiving theventilator bodies 25 in a manner to be further '80 describedhereinafter. For mounting the ventilator as a whole in relation to thewindow, thin sheet metal brackets 34 are provided of somewhat triangularshape, as best shown in Fig. 2, adapted to be secured by 35 screws 35 tothe side parts of the window frame and provided with inwardly extendingprojections 36 upon which the ventilator, as

a whole, can be mounted to swing out and in, from and toward the window.In Fig. 2, the ventilator is swung in against the lower bar of the sashto prevent any entrance of air into the room except through theventilator and in Fig. 3 the ventilator is shown as swung into 95vertical position to let the window sash with the handles 37 be loweredto closed position.

It is obvious that the ventilator may be tipped more or less, that is,between the two positions shown to allow for more or less directventilation as well as ventilation through the ventilator itself.

The thin metal brackets 34 have inclined extensions 38 on their edgeswhich extend into the room so that, when the ventilator is inclined, asshown in Fi 2, no opening will be provided at the ends etween theventilator and the side bars of the window frame.

The ventilator as a whole is made adjustable as to length so as to befitted nicely between the brackets 34 or within the window frame beneaththe sash, as shown in Fig. 4, by means of U-shaped end plates 39 which,as shown in Fig. 1, are as long as the width or heighth of theventilator and are wide enough to provide the necessary endwiseadjustment. These end members are adapted to be clamped upon the ends ofthe frame of the ventilator by means of screws 40 having heads 41 on theouterV side of the ventilator and thumb nuts 42 on theirinner ends. Theside plates 43 of the end plates 39 are slotted, as shown at'44, topermit the adjusting of the plates longitudinally of the ventilator onthe bolts 40. In some instances,-the slots 44 might be opened beyond theouter edges of the end bars 29 and ,thus permit unobstructed passagethrough the ventilator. For the purpose of preventing this or coveringthe slots, I provide a cover plate 45 arranged upon the outer side ofeach of the end members 39, having slots 46 to permit the passage of thebolts 40 but pivoted at 47 out of alignment with the slots 44 so that,as the bolts pass through the slots 46 in the cover plates, they areswung on the pivots 47 and cover the outer ends of the slots 44. Thispresent invention relates more particularly to the construction of thebody of the ventilator. This body, as best shown in Figs. 9 to 11,inclusive, comprises a. f'oraminous body which hasconsiderablevthickness and is made up of relatively thin walls 48 whichare so arranged and spaced apart that 'they provide openings 49 throughthe body from face to face, the openings being of relativel smalldiameter and relatively long, that is, they are of len h to extend fromface to face of the body of t e ventilator.

While such a foraminous body might be made in different ways, I preferto make it, in the manner shown, out of relatively narrow long strips 50of thin sheet metal which are corrugated transversely, as shown at 51,Figs. l() and 11, to provide transversely extending alternate groovesopening on opposite sides of the corrugated strip. These corrugatedstrips 50 are assembled face to face, as best shown 'm Figs. 9 and 10,and when thus assembled and held in position, they form the elongatedpassages 49 which are of relativel small area. In practical screens ofthis kin these openings may be from one-quarter of an inch tothree-eighths of an inch long and about one-sixteenth of an inch inarea. For

'65 the purpose of holdingthe assembled strips provided in the ends ofthe bars. clamping rods may be secured in any suitable extend throughopenings 54 provided ther ends of the strips and through openin l55 esemanner, such as by riveting or soldering their ends in position, asshown at 56, Figs. 8 and 9. The foraminous bodiesbeing thus prepared,they are mounted in the grooves 31,' 32 and 33 of the frame before oneof the side bars is placed in position and then the loose side bar issecured in position and the ventilator structure is complete. A 'screenor ventilator having the ventilator proper provided with such elongatedpassa es of relatively small area has features in re ation toventilation not possessed by any screen which is relatively thin and hasopenings of very limited len ths.

t has been found that screens of this character, that is, the ones withthe relatively small area passages prevents the free blowing through ofa strong wind, but does not prevent the comparative free passage of airack Aand forth through the ventilator. Another feature of importance isthat the assages are so small in area that the sur ace attraction of thewalls of the passages seems to prevent the forcin of water through thescreen, especially if t e screen is in position at the time of a rainstorm so substantially no water passes through the screen, even with astrong wind blowing against the outer surface of the screen. Anotherfeature of importance is that soot or other dirt. does not seem to passthrough the screen but is held on same and can be readily washed olf bywater, particularly if the screen is held below a stream of water andthe water is allowed to pass through the screen. A further feature ofimportance is that, although the screen can be looked through if thelines of sight are parallel with the openings, the sight. is hindered bya very slight angular position of the screen, consequently, the screenis useful in many places where ventilation is desired but it is notdesirable to permit free sight, as, for instance, in the upper part ofdoors.

While I have shown and described the body of the screen as being made ofthin corrugated strips of sheet metalI do not wish tended positions.

or specific features of construction herein shown and described.

I claim: v

1. A ventilator body made up of relativelynarrow strips of thin sheetmetal, the

strips formed into transversely extending corrugations, and the stripsnested together to provide relatively long small assages extendingthrough the body from ace to face, the passages separated by relativelythin Walls.

2. A Window ventilator of the kind described and comprising a Hatventilator body provided with relatively long Ventilating passages ofrelatively small area, means for ivotally mountin the ventilator body atits ends to tip horlzontally, and .means for preventing air passing theends of the body when same is arranged in an inclined position.

3. In a window ventilator of the kind de' scribed, a ventilator bodyshorter than the space to be filled, slotted adjustable end members formaking the body of desired length, and automatic means for closing saidslots when the end members are arranged in ex- 4. The invention asdefined in claim 3, the automatic closure means inclu'dn platespivotally mounted on the end mem ers and adapted to be swung by themovement of the end members.

5. In a foraminous structure of the kind described and made up of aplurality of substantially parallel strlps, the strips made of thinsheet metal and corrugated transversely and nested together, the stripsbeing interlocked longitudinally b the nesting and means holding thestrips t us nested. I

,In witness that I claim the foregoing as my invention, I aflix mysignature this 2nd day of Jul', 1930.

UGUST D. MEISELBACH.

